Here are the steps I did in Photoshop:
1. AutoLevels
2. Using the dodge tool, I selectively lightened the tree areas, and the bottom of the cathedral.
3. Then I increased the green, yellow and red saturation to bring more detail to the trees.
4. Lastly, I did Unsharp Mask.

Hope you find these changes helpful, or at least interesting to see a different version of your photo!

Teo-I really liked this picture "The tower del Torros in Sevilla beside the Gualdakivir river" . But is it supposed to be tilted ? I straightened the tower but 2° clockwise . I sharpened the picture in the lab color and finally added a frame . What do you think?